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Carbon-fibre-reinforced carbon composite filled with SiC particles forming a porous matrix

✍ Scribed by Juliane Mentz; Marcus Müller; Hans Peter Buchkremer; Detlev Stöver

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
315 KB
Volume
425
Category
Article
ISSN
0921-5093

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✦ Synopsis

A carbon-fibre-reinforced carbon (C/C) composite filled with silicon carbide (SiC) particles was produced, using the winding technique. A porous matrix consisting of glassy carbon, SiC particles and small pores in homogeneous distribution was produced, ensuring a damage-tolerant fracture behaviour. Neither fibre coatings nor further infiltration steps were necessary for the preparation of the composite, which makes this a low-cost process making no limitations on wall thickness. The microstructure and homogeneity of the material is shown using micrographs, mercury porosimetry and BET measurements. Bending tests, as well as single-edge notch beam (SENB) tests point to high values for the bending strength and formal fracture toughness. A damage-tolerant fracture behaviour is demonstrated by the load-displacement curves and fracture surfaces.

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